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1
RESULTS

Media Type
1
texts
Topics & Subjects
1
Letter mail handling.
1
Mail sorting--Maryland--Baltimore.
Collection
1
American Libraries
1
FEDLINK - United States Federal Collection
1
National Institute of Standards and Technology Research Library
1
NBS/NIST Technical Notes
Creator
1
levin, b. m. (bernard martin), 1930-; newman, arthur e.
Language
1
English
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